Portable torch



Aug. 25, 1931. w, c, ELZE 1,820,383

' PORTABLE TORCH Fil ed April 22, 1930 Ei4mmmmm 20 1g g ATTORNEY kerosene, and the poorer grades of gasoline,

. Patented Aug. 25, 193i WAL ER c. ELZE, or ronnsr' HILLS, NEW YORK, ASSIGNOR .ro HAuck MANurAcTpn-gif T we COMPANY,- or BROOKLYN, NEW YORK, A CORPORATION. or 1TTEW1Y0RKQ PORTABLE 'roncn Application filed April 22,

The, invention relates to a novel burner member which is adapted for various pur-' poses and is designed to burn low-grade liquid fuels, such as ordinary heavy tuel oil,

The novel burner or torch is particularly suitable for the destruction of vegetation, as'weeds, and for the extermination of insect; pests and their larvae and eggs, as well as Q the disinfection of fox pens and runs,' h

houses, dog kennels, etc; also, in the removal of snow and ice from railwayswitches may T T T fuel pro]ected from thenozzlei orifice. The

' the'like, and for other thawing purposes.

It has for its object to provide a one-man.

51115 outfit of this type Which may Conveniently be manipulated and which is readily portable. A further object of the invention resides in the provision of a pilot flame and the various shapes of flame.

In carrying'out the inventlon, a liquid fuel T supply'tube affords a support for the torch elementsand provides as well for a handle or grip portion suitable :for manipulating the apparatus.

'- fiexible hose or the like, with a suitable source of fuel supply such as a tank orcontainer. which may either rest upon the ground or. be carried upon theback' of an operator of, the torch; The saidtube terminates at its outer end in a suitable nozzle element through, which the fuel is delivered in finely divided m' state, as by exerting the required pressurev behind the same int-he tank or containerinf;

' nal section and a transverse: section of asuitmanner well understood.

nozzle. To this end, a hood or housing member is caused to surround the saidnozzlepthe T same being provided .with an air port at arrangement whereby a draft is induced to. direct the pilot flame across a nozzle member of the torch; and astillfurther object resides in an arrangement wherebythe relation between the said nozzle member and a,

neetionawith the accompanying drawings, in This tube, moreover, isi adapted forconnectlon, as by means of a 'tionfthereto. I

' ig. 2 is a partial longitudinal section, on

193;). Serial No; 446,213.

the rear and an outlet orifice at the front and is arranged to receive also a 'wick nember designed to be located in juxtaposition to the nozzle. The said wick member in turn communicates with a suitablewick and'ituel reservoir which is adjustably-mounte'd on' the fuel supply tube behind the hcod.

A seriesof inlet openings is provided in the'hood in'proximity to the wick to, induce asecondary stream of inflowing air for sup-" porting the combustion and for directing the flame of said wick acrossthepath of the secondary air flow is arranged, moreover, to enter in a direction lnclined to the pilot flame so'as; to better direct e155 bend'ita'cross the zle member, theefi'ect of the pilot flame thereon may be varied, while variations in the flame may be attained byadjusting the hood on the wick tube to elongate said flame or to flare'it. 'T. The nature of the invention,however, will best be'understood when described in, eon

which: T T

ig. 1 is a side elevation of the novel torch member and portion ofsupply hose connecan enlarged scale. of the burner head. Tl

F igi 13 is a front elevation of the tor-chi Fig, t is aifragmentary longitudinal sec- T tion'of the burner' hea'd illustrating amodification. q t i e; 'Figs."5 and 6 are respectively a longitudi able nozzle member forus'e the torch.

-Referring to the drawings,lO"' designates tainer '(not shown) {for example'gone'jwhich an elongated fuelsupply pipe which is iadapt efw T ed for connectionat one endto a suitable sourceof combustible liquid, as may becfcontained in a readily portable tank or other conor manually conveyed from place to place and to which connection may be made from the pipe end through a flexible hose 11. A strainer 12 may be included in the fuel supply pipe, as well as a controlling valve 13 having the operating trigger 1d whereby theamountof fuel .to be fedfmay be controlled. It .willbe understood that the fuel is supplied under suitable pressure in the usual and well-known .manner so that the same will be forced through the pipe 10 to its outer or burner end at which is provided a nozzle member 15.

This nozzle member may be of any wellknown or special design to deliver the fuel in a sufiiciently finely-subdivided condition to effect its ready combustion when mixed ,withairQ For example, as indicatedin ,Figs. '5 and 6, the nozzle member may comprise a cylinder 16 axially bored from its innerend, .which inner end is threaded to receive the fuel pipe 10. A cap member 17 is threaded over the outer end of the cylinder 16,.which outer end is of reduced diameter to afford an annular chamber 18 between the wall of cap. 17 andthe head of. cylinder 16.

Into this annular chamber is designed to be delivered the fuel asthrough ports 19 extending from the axial bore of the said cylinder. These ports are preferably inclined outwardly; and the inner surface of head 17 as well as the outer surface of cylinder lfi are beveled and cone-shaped .and juxtaposed .to

form a contracted circular orifice 20 for dis-.

charge of the fuel substantially to the longitudinal axis of the cylinder and head. The

latter is also provided with, a flaring orifice 21. inthe aforesaid axis, whereby. the fuel being discharged is caused to make substantially a right-angle turn. vBy suitably setting the head 17 with respect to cylinder 16 the orifice opening 20 may be varied and the velocity of discharge through the said orifice may be regulated to suit conditions.

About the nozzle member, and the outer portion of the tube 10 to which it is'connected, is an enclosing shell or hood member 25; vand through an air supply opening 26 in the rear wall thereof the said snpplytube extends. This hood is preferably slightly rounded and turned upwardly at its lower forward ,end, as indicated at 27 in order to provide a convenient rest shoeand flamedirecting portion in the operation of the burnerg 'and it is also provided with an outlet orifice 28 at said forward end, as well as with .a series of perforations 29 circularly arranged over its lower surface and inclined toward the said orifice. i

The fuel supply pipe for the ready manipulation of the burner apparatus carries an enlar ed grip or operating handle portion 10 sli ably located some distance behind the said hood and at a point, for example, to effect a substantial balance of the apparatus when held thereat.- i

Between the hood 25 and handle portion 10' and also mounted about the supply pipe 10 is located a wick and fuel reservoir 30, the same having a tubular extension 31 from its lower portion which projects through the rear wallof the hood 25 beneath thepipe 10. The said. hood is shown adjustably secured to this extension as by means of the setscrew 32, whereby the position of the nozzle 15 may be fixed. relatively to the outlet orifice 28 of the hood.

The reservoir 30, moreover, is designed to retain a secondary supply of fuel, which may beintroducedthereto through the filling lug 33 of said reservoir, and a wick 34; there 'rom is ad pted to be saturated by the secondary fuel. and to project slightly beyond the end of the tubular extension 31 in proximity to the nozzle member 15. Reservoir 3O is, preferably, also ad ustable, being mounted upon or secured to a sleeve 35 which is slidable over the supply pipe 10. It may be fixed thereto,

member and the hood.

Generally, the-wick is located substantially in the plane of the orifice 21 of the nozzle member or slightly behind the same so that the pilot flame of said wick will be directed across the jet of fuel issuing from said orifice 21. This action is enhanced and maintained by the induced draft of air entering through the perforations 29 beneath said wick. as well as b" the jet effect of the issuing fuel drawino air through the openin 26. The inclination ,of these erforations serves, furtlierniore, .to encoura e the forward flow of air from the rear of the hood, and the rounded. unturned bottom at the orifice end of the.

hood further accentuates this effect.

Ignition of the combustible liquid is thus insured under all conditions; and the pilot flame tends, moreover, to preheat the vapor issuing from the nozzle member. Also, due to r the adjustability of the various elements, as aforesaid, a long concentrated flame or a short flaring flame may be had, as desired.

Under certain conditions, it may be desir; able, in order more effectively to preheat the vapor delivered by nozzle member 15 to increase the length of pipe portion within the hood 25 and immediately behind. said nozzle member by providing it in the form of a coil 40, while the tubular extension 31 from the reservoir 30 is then withdrawn, as indicated in 4, to the back of the hood to direct the pilot flame from its wick across the lower surface of the coil.

Iclaim 1. A portable torch, comprising a fuel supply tube, a nozzle element at'the outer end of said tube, a hood enclosing the nozzle ele- I ment, mounted over the tube a-ndopen at its outer end, a W101: and fuel reservoir mounted on said tube and having atubular extension A hood, and a wick extending from the tubular extension and cooperating with the nozzle element, and the hood being provided with inlet openings in proximity tothe wick end. 3. A portable torch, comprising a fuel supa ply tube, a nozzle element. at the outer end of said tube, a hood enclosing the nozzle element, mounted over the tube and openat.

its outer end, awick and fuel reservoir mounted onsaid tube and having a tubular voir on said tube, and a wick extending from the tubular extension and cooperating with" extension projecting through the rear of said hood, andea wick extending fromthe tubular extension and cooperating with the, nozzle element, and the hood being provided with angularly' directedinlet openings in proximity to the wick end. V

4. A portable torch, comprising a fuel supply'tube, a nozzle element at the outer end of said tube, a hood enclosing the nozzle ele ment, mounted over the tube and open at its outer end, a wick and fuel reservoir mount ed on saidtube' and having'a tubular extension projecting through the rear of said hood, means to adjustably secure the reser-' the nozzle element. I r 5. A portable torch, comprising a fuel sup- 7 'ply tube, a nozzle element at the outer end of said tube, a hood enclosing the nozzle element, adjustably mounted over the tube and open at its outer end, a wick and fuel reservoir mounted on said tube and having a tubular extension projecting through therear of said hood, and a wick extending from the tubular extension, and cooperating with the nozzle element.

6. A portable torch, comprising a fuel supply tube, a nozzle element at the outer end of said'tube, a hood enclosing the nozzle element, mounted over the tube and open at it's outer end, a wick and fuel reservoir mounted on said tube and having: a tubular extension projecting through therear of said'hood,

Vmeans to adjustably secure the reservoir on said tube, meansto adj ustably secure the hood on said tubular extension, and a Wick extending from the tubular extension and cooperating with the nozzle element 7. A: portable torch, comprising a fuel supply tube, a nozzle element at the outer end of said tube, a hood enclosing the nozzle element, mounted over the tube and open at its outer end and rounded at the lower portion of said outerend, a Wick and fuel reservo1r mounted on sald tube and having a tubular extension projecting through the rear ofsaid hood, and a wick extending from the tubular extension and cooperating with the nozzle'element.

' .8. A portable torch, comprising a fuel supply tube, a nozzle element attheouter end of said tube, a portion ofthe latter immediately behind thenozzle element being coiled, a

hood enclosing the nozzle element, mounted over the tube andjopen at its outer end, a

wickand fuel-reservoirmounted on said tube and havingfa tubular extension projecting through the '"rearof said hood, and awick extending from the tubular extension and co- 7 operating with the nozzle element.

9. Aportable torch, COmPIISIIIg'a. fuel supply tube, a nozzle element at the outer'end;

of said tube,"a portion of the latter immedi-' ately behind thenozzle'element beingcoiled,

a hood enclosing the nozzle element, mounted over the tube and open at its outer end, a wick and fuel reservoir mounted on said tube andhaving a tubular extension projecting through the rear of said hood, and awick extending from the tubular extension and cooperating with the nozzle element, and I located-in proximityto said coiled portion.

' In testimony whereof I aflix my signature. I

WALTERC. ELZE. 

